Steam-trap.



No. 730,213. I 4 f PATENTE'D JUNE 2, L903. F. 1). KQEHLER& T. w; MONAHAN.

STEAM TRAP.

APPLICATION FILED SEPT 18. 1902.

N0 MODEL.

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3 of the sections of pipe 1 and 2.

UNITED STATES Patented June 2, 190 3.

PATENT OFFIC FREDERICK D. KOEHLER AND THOMAS W. MONAHAN, OF NEW YORK, N. Y.

STEAM-TRAP.

SPECIFICATION forming part of Letters Patent No. 730,213, datedJune'fZ, 1903.

Original application filed May 12, 1902, Serial No. 106,864. Divided and this application filed $eptemher 18, 1902. $erial Ila-123,825. (No model.)

LER and THOMAS W. MONAHAN,citiZenS of the United States,residingin the borough of Rich- 5 mond, New York city, county of Richmond, and State of New York, have invented jointly the new and useful Improvements in Steam- Traps, of which the following is a specification, this application being a division of our IO application, Serial No. 106,854, filed May 12, I

forced from pipe-sections l and 2 down Our invention relates to automatic steamtraps and similar devices designed to be op-' Figure 1 of the drawings is a side view of the device, the right half being broken apart,

as indicated. Fig. 2 is an end view of the 25 same looking from right to left in Fig. 1.

Referring to the drawings, 1 and 2 are two sections of pipe screwed into the coupling 3. The right-hand section is shown broken away;

but the omitted parts correspond to the similar parts shown in the left-hand portion of the figure. Extending vertically through coupling 3 and screwed into its upper opening is the pipe 4:, to which the angle-valve 5 is secured. The brackets 6 are screwed on each Between the brackets 6 and secured thereto extend on either side of the pipe-sections 1 and 2 the bent rods 7, which are engaged by the vertical rods 8.

The cross-rod 9, having its ends extending through the upper ends of vertical rods 8, passes through the short end 11 of lever 12. On the valve-stem 13 is a pin 14., which acts as a pivot forlever 12, on the long end of which is hung a weight 15 by a pin 16. The

jaws 17 embrace pin 14, as shown.

The sealed tube 18 is screwed into the lower opening of coupling 3, surrounding the lower end of pipe 4 and extending below it. At the bottom of sealed tube 18 is the cook 19.

The operation of the device is as follows: The weight 15 normallyrests on pipe 1 or other suitable support. As water from the system collects in pipe-sections 1 and 2 the pipe cools and contracts, carrying brackets 6 toward each other and buckling or bending rods 7 so that they rise in the middle, shoving up vertical rods 8, cross-rod 9, and lever 12, which turns on pin 16 and raises valvestem 13t0 open valve 5. The water is then through sealed tube 18, up through pipe 4,- and out through valve 5 and any outlet-pipe (not shown) which may be provided. As the water leaves pipe-sections 1 and 2 steam enters, expanding the pipe by its higher tem-. peratu re, so that brackets 6 separate, pulling rods 7--n'earer a straight line, and lowering rods 8, cross-rod 9, lever 12, and valve-stem 13 to reseat valve 5. The sealed tube 18 and pipe 4 form a pocket or water seal, so that the steam entering pipe-sections land 2 has time to expand the same'to close the outlet- Valve before the water is entirely expelled and steam escapes. The outlet-valve may be opened at will by raising the weighted end of lever 12. The water may be allowed to escape through the cock 16.

It will be seen that-a very slight expansion or contraction of pipe-sections 1 and 2 will cause a much greater movement of rods 8 and valve-stem 13. By having both brackets 6 secured to the pipe the entire expansion or contraction thereof is availed of. The greater the angle in the rods 7 the quicker will be the operation of the device. Care should be taken, however, not to arrange the rods 7 too near a straight line.

In case of sudden increase of pressure the valve 5 will elevate valve-stem 13 and lever 0 12, which will turn on cross-bar 9, raising weight 15 until pressure is reduced tonormal.

The rods 7 may of course be made in two pieces hinged or pivoted in the middle where connected to the upright rods 8. Instead of 5 two rods 7 on both sides of'the pipe a stouter single rod may be employed,connected in any convenient way to the valve-stem 13.

In case of expansion of pipe-sections 1 and 2 after the valve is firmly seated the downward pull of rods 7 will cause lever 12 to turn on its pivot 14, raising weight 15, thus avoiding undue strain or breakage. The contraction of the pipe thereafter will first lower weight 15 to its support and then unseat the valve 5, as hereinbefore explained. We do not abandon features shown in the specification and drawings, but not not claimed herein. The same are embraced in our application, Serial No. 106,854, filed May 12, 1902, of which this is a division,

What we claim as new, and desire to secure by Letters Patent, is-

1. A receiver adapted to expand or contract in accordance with the temperature of its contents, a valve, a lever pivoted to the valve-stem one end of said lever being weighted and normally supported, the other end of said lever being pinned to links connected with mechanism adapted to be raised or lowered by the contraction or expansion of the receiver.

2. A receiving-pipe, bent rods on each side of said pipe having their ends secured thereto, a valve having a valve-stem perpendicular to the receiving-pipe, a weighted lever pivoted to the valve-stem, and links between the unweighted end of the lever and the centers of the bent rods, whereby changes in the buckling of the rods actuate the valve, excess of movement after the valve is seated raising the weight.

A receiver adapted to be expanded or contracted by changes in the temperature of its contents, a valve controlling an outlet from the receiver,a lever, normally fulcru med in a supported weight, connected to the stem of the valve and to devices actuated by the expansion or contraction of the receiver whereby the expansion or contraction of the receiver shifts the valve-stem to close or open the valve, excess of movement after the valve is seated causing the fulcrum of the lever to change from the weight to the valve-stem to raise the Weight and relieve the strain on the valve.

4. Areceiver, a valve therefor, a lever connected with said valve and having a weight hung on its longer arm while its shorter arm is pinned to devices for actuating the valve to open and close an outlet from the receiver.

5. A receiver, a valve controlling an outlet therefrom, a weighted lever connected to the stem of the valve and to automatic devices for actuating the valve, all arranged so that the movement of the lever to open and close the valve will normally take place with the fulcrum on the weight, while excess of pressure in the receiver will raise the valve moving the lever on another fulcrum and excessive force exerted to seat the valve will raise the weight moving the lever on a third fulcrum.

In testimony whereof we have signed our names to this specification, in the presence of two subscribing witnesses, this 16th day of September, 1902.

FREDERICK D. KOEI-ILER. THOMAS W. MONAHAN. \Vitnesses:

JOSEPH A. S'rE'rsoN, HARRY R. SAMUELLS. 

